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<li class="navelem"><a class="el" href="dir_6b3ae6988449b0834e9596fad5d75199.html">gpu</a></li>  </ul>
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<div class="title">IndexProxy.h</div>  </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/**</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Copyright (c) 2015-present, Facebook, Inc.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> * This source code is licensed under the BSD+Patents license found in the</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * LICENSE file in the root directory of this source tree.</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;</div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">// Copyright 2004-present Facebook. All Rights Reserved.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;</div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#pragma once</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#include &quot;../Index.h&quot;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &quot;utils/WorkerThread.h&quot;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#include &lt;memory&gt;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="keyword">namespace </span>faiss { <span class="keyword">namespace </span>gpu {</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">/// Takes individual faiss::Index instances, and splits queries for</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment">/// sending to each Index instance, and joins the results together</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment">/// when done.</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment">/// Each index is managed by a separate CPU thread.</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"><a class="line" href="classfaiss_1_1gpu_1_1IndexProxy.html">   24</a></span>&#160;<span class="comment"></span><span class="keyword">class </span><a class="code" href="classfaiss_1_1gpu_1_1IndexProxy.html">IndexProxy</a> : <span class="keyword">public</span> <a class="code" href="structfaiss_1_1Index.html">faiss::Index</a> {</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;  <a class="code" href="classfaiss_1_1gpu_1_1IndexProxy.html">IndexProxy</a>();</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;  ~<a class="code" href="classfaiss_1_1gpu_1_1IndexProxy.html">IndexProxy</a>() <span class="keyword">override</span>;</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="comment">  /// Adds an index that is managed by ourselves.</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="comment">  /// WARNING: once an index is added to this proxy, it becomes unsafe</span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="comment">  /// to touch it from any other thread than that on which is managing</span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="comment">  /// it, until we are shut down. Use runOnIndex to perform work on it</span></div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="comment">  /// instead.</span></div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="comment"></span>  <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1IndexProxy.html#af9bb81e75f8d5471094e4d4776a56f63">addIndex</a>(<a class="code" href="structfaiss_1_1Index.html">faiss::Index</a>* index);</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="comment">  /// Remove an index that is managed by ourselves.</span></div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="comment">  /// This will flush all pending work on that index, and then shut</span></div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="comment">  /// down its managing thread, and will remove the index.</span></div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="comment"></span>  <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1IndexProxy.html#a99aaeb0573880fa4d6efaeb39f93deeb">removeIndex</a>(<a class="code" href="structfaiss_1_1Index.html">faiss::Index</a>* index);</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="comment">  /// Run a function on all indices, in the thread that the index is</span></div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="comment">  /// managed in.</span></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="comment"></span>  <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1IndexProxy.html#a4efa3134256a6cd6a98c45184a7e8dbf">runOnIndex</a>(std::function&lt;<span class="keywordtype">void</span>(<a class="code" href="structfaiss_1_1Index.html">faiss::Index</a>*)&gt; f);</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="comment">  /// faiss::Index API</span></div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="comment">  /// All indices receive the same call</span></div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="comment"></span>  <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1IndexProxy.html#a7f1b8287a607c80f2bb92f4ac0300649">reset</a>() <span class="keyword">override</span>;</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="comment">  /// faiss::Index API</span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="comment">  /// All indices receive the same call</span></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="comment"></span>  <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1IndexProxy.html#aee6fe7e95b02238103a6a2d1f6d2cd00">train</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">Index::idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x) <span class="keyword">override</span>;</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="comment">  /// faiss::Index API</span></div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="comment">  /// All indices receive the same call</span></div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="comment"></span>  <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1IndexProxy.html#a61319b7ea215bf0ec6709443d8d4ee20">add</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">Index::idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x) <span class="keyword">override</span>;</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="comment">  /// faiss::Index API</span></div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="comment">  /// Query is partitioned into a slice for each sub-index</span></div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="comment">  /// split by ceil(n / #indices) for our sub-indices</span></div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="comment"></span>  <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1IndexProxy.html#a25ed68079907eeeca9d441cdd4fc0740">search</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a> n,</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;              <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;              <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a> k,</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;              <span class="keywordtype">float</span>* distances,</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;              <a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a>* labels) <span class="keyword">const override</span>;</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="comment">  /// reconstructs from the first index</span></div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="comment"></span>  <span class="keywordtype">void</span> <a class="code" href="classfaiss_1_1gpu_1_1IndexProxy.html#a8bf6d513b4f41fb533f0d023c1e143ba">reconstruct</a>(<a class="code" href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">idx_t</a>, <span class="keywordtype">float</span> *v) <span class="keyword">const override</span>;</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;  <span class="keywordtype">bool</span> own_fields;</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;  <span class="keywordtype">int</span> count()<span class="keyword"> const </span>{<span class="keywordflow">return</span> indices_.size(); }</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;  <a class="code" href="structfaiss_1_1Index.html">faiss::Index</a>* at(<span class="keywordtype">int</span> i) {<span class="keywordflow">return</span> indices_[i].first; }</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;  <span class="keyword">const</span> <a class="code" href="structfaiss_1_1Index.html">faiss::Index</a>* at(<span class="keywordtype">int</span> i)<span class="keyword"> const </span>{<span class="keywordflow">return</span> indices_[i].first; }</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160; <span class="keyword">private</span>:<span class="comment"></span></div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;<span class="comment">  /// Collection of Index instances, with their managing worker thread</span></div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;<span class="comment"></span>  <span class="keyword">mutable</span> std::vector&lt;std::pair&lt;<a class="code" href="structfaiss_1_1Index.html">faiss::Index</a>*,</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;                                std::unique_ptr&lt;WorkerThread&gt; &gt; &gt; indices_;</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;};</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="comment">/** Clustering on GPU (is here because uses Proxy with ngpu &gt; 1</span></div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="comment"> * @param ngpu nb of GPUs to use</span></div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="comment"> * @param d dimension of the data</span></div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="comment"> * @param n nb of training vectors</span></div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="comment"> * @param k nb of output centroids</span></div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="comment"> * @param x training set (size n * d)</span></div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;<span class="comment"> * @param centroids output centroids (size k * d)</span></div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;<span class="comment"> * @return final quantization error</span></div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;<span class="keywordtype">float</span> kmeans_clustering_gpu (<span class="keywordtype">int</span> ngpu, <span class="keywordtype">size_t</span> d, <span class="keywordtype">size_t</span> n, <span class="keywordtype">size_t</span> k,</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;                             <span class="keyword">const</span> <span class="keywordtype">float</span> *x,</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;                             <span class="keywordtype">float</span> *centroids,</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;                             <span class="keywordtype">bool</span> useFloat16,</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;                             <span class="keywordtype">bool</span> storeTransposed);</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;} } <span class="comment">// namespace</span></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IndexProxy_html_a7f1b8287a607c80f2bb92f4ac0300649"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IndexProxy.html#a7f1b8287a607c80f2bb92f4ac0300649">faiss::gpu::IndexProxy::reset</a></div><div class="ttdeci">void reset() override</div><div class="ttdef"><b>Definition:</b> <a href="IndexProxy_8cpp_source.html#l00100">IndexProxy.cpp:100</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IndexProxy_html_a99aaeb0573880fa4d6efaeb39f93deeb"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IndexProxy.html#a99aaeb0573880fa4d6efaeb39f93deeb">faiss::gpu::IndexProxy::removeIndex</a></div><div class="ttdeci">void removeIndex(faiss::Index *index)</div><div class="ttdef"><b>Definition:</b> <a href="IndexProxy_8cpp_source.html#l00067">IndexProxy.cpp:67</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IndexProxy_html_a4efa3134256a6cd6a98c45184a7e8dbf"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IndexProxy.html#a4efa3134256a6cd6a98c45184a7e8dbf">faiss::gpu::IndexProxy::runOnIndex</a></div><div class="ttdeci">void runOnIndex(std::function&lt; void(faiss::Index *)&gt; f)</div><div class="ttdef"><b>Definition:</b> <a href="IndexProxy_8cpp_source.html#l00085">IndexProxy.cpp:85</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IndexProxy_html_aee6fe7e95b02238103a6a2d1f6d2cd00"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IndexProxy.html#aee6fe7e95b02238103a6a2d1f6d2cd00">faiss::gpu::IndexProxy::train</a></div><div class="ttdeci">void train(Index::idx_t n, const float *x) override</div><div class="ttdef"><b>Definition:</b> <a href="IndexProxy_8cpp_source.html#l00106">IndexProxy.cpp:106</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IndexProxy_html_a8bf6d513b4f41fb533f0d023c1e143ba"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IndexProxy.html#a8bf6d513b4f41fb533f0d023c1e143ba">faiss::gpu::IndexProxy::reconstruct</a></div><div class="ttdeci">void reconstruct(idx_t, float *v) const override</div><div class="ttdoc">reconstructs from the first index </div><div class="ttdef"><b>Definition:</b> <a href="IndexProxy_8cpp_source.html#l00117">IndexProxy.cpp:117</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IndexProxy_html"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IndexProxy.html">faiss::gpu::IndexProxy</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexProxy_8h_source.html#l00024">IndexProxy.h:24</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a040c6aed1f224f3ea7bf58eebc0c31a4"><div class="ttname"><a href="structfaiss_1_1Index.html#a040c6aed1f224f3ea7bf58eebc0c31a4">faiss::Index::idx_t</a></div><div class="ttdeci">long idx_t</div><div class="ttdoc">all indices are this type </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00062">Index.h:62</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IndexProxy_html_af9bb81e75f8d5471094e4d4776a56f63"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IndexProxy.html#af9bb81e75f8d5471094e4d4776a56f63">faiss::gpu::IndexProxy::addIndex</a></div><div class="ttdeci">void addIndex(faiss::Index *index)</div><div class="ttdef"><b>Definition:</b> <a href="IndexProxy_8cpp_source.html#l00032">IndexProxy.cpp:32</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IndexProxy_html_a61319b7ea215bf0ec6709443d8d4ee20"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IndexProxy.html#a61319b7ea215bf0ec6709443d8d4ee20">faiss::gpu::IndexProxy::add</a></div><div class="ttdeci">void add(Index::idx_t n, const float *x) override</div><div class="ttdef"><b>Definition:</b> <a href="IndexProxy_8cpp_source.html#l00111">IndexProxy.cpp:111</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html"><div class="ttname"><a href="structfaiss_1_1Index.html">faiss::Index</a></div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00060">Index.h:60</a></div></div>
<div class="ttc" id="classfaiss_1_1gpu_1_1IndexProxy_html_a25ed68079907eeeca9d441cdd4fc0740"><div class="ttname"><a href="classfaiss_1_1gpu_1_1IndexProxy.html#a25ed68079907eeeca9d441cdd4fc0740">faiss::gpu::IndexProxy::search</a></div><div class="ttdeci">void search(faiss::Index::idx_t n, const float *x, faiss::Index::idx_t k, float *distances, faiss::Index::idx_t *labels) const override</div><div class="ttdef"><b>Definition:</b> <a href="IndexProxy_8cpp_source.html#l00124">IndexProxy.cpp:124</a></div></div>
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